<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <title>trscale</title>
    <link rel="stylesheet" type="text/css" href="csound.css" />
    <meta name="generator" content="DocBook XSL Stylesheets V1.78.1" />
    <link rel="home" href="index.html" title="The Canonical Csound Reference Manual" />
    <link rel="up" href="OpcodesTop.html" title="Orchestra Opcodes and Operators" />
    <link rel="prev" href="trmix.html" title="trmix" />
    <link rel="next" href="trshift.html" title="trshift" />
  </head>
  <body>
    <div class="navheader">
      <table width="100%" summary="Navigation header">
        <tr>
          <th colspan="3" align="center">trscale</th>
        </tr>
        <tr>
          <td width="20%" align="left"><a accesskey="p" href="trmix.html">Prev</a> </td>
          <th width="60%" align="center">Orchestra Opcodes and Operators</th>
          <td width="20%" align="right"> <a accesskey="n" href="trshift.html">Next</a></td>
        </tr>
      </table>
      <hr />
    </div>
    <div class="refentry">
      <a id="trscale"></a>
      <div class="titlepage"></div>
      <a id="Indextrscale" class="indexterm"></a>
      <div class="refnamediv">
        <h2>
          <span class="refentrytitle">trscale</span>
        </h2>
        <p>trscale — 
      Streaming partial track frequency scaling.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp159741248"></a>
        <h2>Description</h2>
        <p>
      The <span class="emphasis"><em>trscale</em></span> opcode takes an input containg a TRACKS pv streaming signal (as generated,
      for instance by <span class="emphasis"><em>partials</em></span>) and scales all frequencies by a k-rate amount. It can also, optionally,
      scale the gain of the signal by a k-rate amount (default 1). The result is pitch shifting of
      the input tracks.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp159743632"></a>
        <h2>Syntax</h2>
        <pre class="synopsis">fsig <span class="command"><strong>trscale</strong></span> fin, kpitch[, kgain]</pre>
      </div>
      <div class="refsect1">
        <a id="idp159807728"></a>
        <h2>Performance</h2>
        <p>
      <span class="emphasis"><em>fsig</em></span> -- output pv stream in TRACKS format
    </p>
        <p>
      <span class="emphasis"><em>fin</em></span> -- input pv stream in TRACKS format
    </p>
        <p>
      <span class="emphasis"><em>kpitch</em></span> -- frequency scaling
    </p>
        <p>
      <span class="emphasis"><em>kgain</em></span> -- amplitude scaling (default 1)
    </p>
      </div>
      <div class="refsect1">
        <a id="idp159811920"></a>
        <h2>Examples</h2>
        <p>
      Here is an example of the trscale opcode. It uses the file <a class="ulink" href="examples/trscale.csd" target="_top"><em class="citetitle">trscale.csd</em></a>.
      </p>
        <div class="example">
          <a id="idp159813696"></a>
          <p class="title">
            <strong>Example 950. Example of the trscale opcode.</strong>
          </p>
          <div class="example-contents">
            <p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
            <pre class="programlisting">
<span class="csdtag">&lt;CsoundSynthesizer&gt;</span>
<span class="csdtag">&lt;CsOptions&gt;</span>
<span class="comment">; Select audio/midi flags here according to platform</span>
-odac     <span class="comment">;;;realtime audio out</span>
<span class="comment">;-iadc    ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o trscale.wav -W ;;; for file output any platform</span>
<span class="csdtag">&lt;/CsOptions&gt;</span>
<span class="csdtag">&lt;CsInstruments&gt;</span>

<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">ksmps</span> <span class="op">=</span> 32
<span class="ohdr">nchnls</span> <span class="op">=</span> 2
<span class="ohdr">0dbfs</span>  <span class="op">=</span> 1

<span class="oblock">instr</span> 1

kpitch  <span class="op">=</span> p4
ain	<span class="opc">diskin2</span>	"fox.wav", 1
fs1,fsi2 <span class="opc">pvsifd</span>	ain, 2048, 512, 1		<span class="comment">; ifd analysis</span>
fst	<span class="opc">partials</span> fs1, fsi2, .003, 1, 3, 500	<span class="comment">; partial tracking</span>
fscl	<span class="opc">trscale</span>	fst, kpitch			<span class="comment">; frequency scale</span>
aout	<span class="opc">tradsyn</span>	fscl, 1, 1, 500, 1		<span class="comment">; resynthesis </span>
        <span class="opc">outs</span>    aout, aout

<span class="oblock">endin</span>
<span class="csdtag">&lt;/CsInstruments&gt;</span>
<span class="csdtag">&lt;CsScore&gt;</span>
<span class="stamnt">f</span>1 0 8192 10 1

<span class="stamnt">i</span> 1 0 3 1.5	<span class="comment">;up a 5th</span>
<span class="stamnt">i</span> 1 3 3 3	<span class="comment">;two octaves higher</span>
<span class="stamnt">e</span>
<span class="csdtag">&lt;/CsScore&gt;</span>
<span class="csdtag">&lt;/CsoundSynthesizer&gt;</span>
</pre>
          </div>
        </div>
        <p><br class="example-break" />
    </p>
        <p>
      The example above shows partial tracking of an ifd-analysis signal and
      linear additive resynthesis with pitch shifting. 
    </p>
      </div>
      <div class="refsect1">
        <a id="idp159818528"></a>
        <h2>Credits</h2>
        <p>
      </p>
        <table border="0" summary="Simple list" class="simplelist">
          <tr>
            <td>Author: Victor Lazzarini</td>
          </tr>
          <tr>
            <td>February 2006 </td>
          </tr>
        </table>
        <p>
    </p>
        <p>New in Csound 5.01</p>
      </div>
    </div>
    <div class="navfooter">
      <hr />
      <table width="100%" summary="Navigation footer">
        <tr>
          <td width="40%" align="left"><a accesskey="p" href="trmix.html">Prev</a> </td>
          <td width="20%" align="center">
            <a accesskey="u" href="OpcodesTop.html">Up</a>
          </td>
          <td width="40%" align="right"> <a accesskey="n" href="trshift.html">Next</a></td>
        </tr>
        <tr>
          <td width="40%" align="left" valign="top">trmix </td>
          <td width="20%" align="center">
            <a accesskey="h" href="index.html">Home</a>
          </td>
          <td width="40%" align="right" valign="top"> trshift</td>
        </tr>
      </table>
    </div>
  </body>
</html>
